This air emissions inventory attempts to estimate by category, the anthropogenic sources of air pollutants produced only in Nasugbu which is defined by meteorological, climatological, and topographical factors. The most common and virulent pollutants presented in this inventory are carbon monoxide, sulfur dioxide, oxides of nitrogen, suspended particulate matters and volatile organic compounds. Biogenic and geogenic sources of air contaminants are not included in this inventory. The study is intended to identify the major sources of air pollution and quantify the amount emitted which will serve as the basis for the formulation of mitigating measures and air quality management strategies. However, management decisions based on emission inventories must take into account some human and natural factors such as control designs, meteorology, topography, and climate.